Step 9: Finishing up and Casing

Step 10: Further Thoughts and How to Improve

Since there were a lot of pins left, after finishing the project, if I got a chance to do it again, I would add 2 LEDs and make them the robots eyes a...

Since I had a lot of ATtiny2313s lying around I wanted to do something cool with them, I thought for a while and then decided to make a simple wall avoiding robot with the ATtiny2313, an ultrasonic sensor and 2 motors.

Its an easy to make and simple robot which runs on a very small amount of code so as to support and work with the ATtiny2313.

For those of you out there who want to make a small robot with the Arduino processing, but you are not able to as the Arduino is too big for a small robot, then this is the perfect robot for you!

Since the ATtiny2313 chip is much smaller compared to the Arduino, it fits in almost anywhere, which allows you to make a small simple robot which evades walls.

Video:

Note: This is by no means related to the Star Wars charecter R2-D2, its just my own robot :)

Im sorry for the confusion I should have stuck to the pins on the attiny itself but I kept swapping between the attiny pins and the digital pins, I said digital pins 9 and 7 to the center pins of the transistors which are pins 9 and 12 on the attiny2313, have a look at this image.

I don't use my email that much, you can send me a message on instructables or just post the problem in the comments here and I can help solve it as it would help others with the same problem as well :) Thanks

Hmm it might be possible...but I'm not really good with all the weights and measurements and stuff as I haven't got good tools to make very precise and accurate things, if I get a couple of tools and I get to use wood, then the first thing I'm going to make will be a quadrocopter as right now no matter what I do its always off balance or too heavy or too weak etc....and this might be something I can experiment with as well :)

Great project and documentation, may I ask why you swapped the original motors though and may I also know what company the batteries are of because all the batteries 9V (rechargeable and Non-rechargeable never had 330mAh capacity)

The battery I used was similar to this one: www.ebay.com/itm/4-pcs-9V-9-0V-350mAh-Ni-MH-17R8H-Rechargeable-Battery-/380639753558?pt=US_Rechargeable_Batteries&hash=item589fe5b556

I swapped the original motors with the geared ones as the original ones weren't able to move the robot at a good speed, it moved very slowly, but with these new motors, it moves at a nice speed when the batteries are fully charged!